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Commitments and Contingencies - Additional Information (Details) ₩ in Millions | Dec. 31, 2024 KRW (₩) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 KRW (₩)
--- | --- | --- | ---
Disclosure of contingent liabilities [line items] |  |  |
Purchase obligations | ₩ 4,836 |  | ₩ 4,942
Kookmin Bank |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Amount of payment guarantee | 359 | $ 244,450 |
Seoul Guarantee Insurance Co. Ltd. |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Amount of payment guarantee | ₩ 518 |  |

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- Definition Payment guarantees receivable. + References No definition available. + Details
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Namespace Prefix: | grvy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Purchase obligations. + References No definition available. + Details
Name: | grvy_PurchaseObligations
Namespace Prefix: | grvy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfContingentLiabilitiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_CounterpartiesAxis=grvy_KookminBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_CounterpartiesAxis=grvy_SeoulGuaranteeInsuranceCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |